I practice at 35 yards all year. Throw in some 3d tourneys but my groups are the same from 35 into 10 yards, but FOR ME to many things can happen before arrow gets to deer. It's not that most guys cant hit vitals at 50 yards it what can happen. If you have shot WHITETAILS at that distance I would say your more lucky than good. But its a free world, a blood trail that goes dead cause of a bad hit is one of the worst feeling we as hunters feel, not worth it for me.
